Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
020031goodexcellent31excellent
010026goodexcellent31excellent
000037goodexcellent41excellent
230035goodexcellent31excellent
220035goodexcellent21excellent
210011excellentexcellent21excellent
20004excellentexcellent11excellent
19003excellentexcellent11excellent
18003excellentexcellent11excellent
17004excellentexcellent11excellent
16003excellentexcellent11excellent
15005excellentexcellent11excellent
14003excellentexcellent11excellent
13005excellentexcellent11excellent
12004excellentexcellent11excellent
11009excellentexcellent11excellent
10009excellentexcellent21excellent
090022goodexcellent41excellent
080027goodexcellent41excellent
070025goodexcellent41excellent
060021goodexcellent41excellent
050027goodexcellent31excellent
040025goodexcellent31excellent
030042goodexcellent41excellent